A 14-year-old Glenelg boy was stabbed with a penknife Sunday after he chased down another youth who stole his friend's Halloween candy, Howard County police said.

The incident was one of seven Halloween-related street robberies Howard County police are investigating. In most cases, the thieves punched trick-or-treaters in the face or pushed them to the ground before taking their candy, police said.

The Glenelg teen was trick-or-treating with another 14-year-old from Clarksville in the 4100 block of Sharp Road at 9:10 p.m. Sunday when the suspect snatched the Clarksville boy's bag and ran.

The Glenelg youth gave chase and was stabbed in the leg after a fight. He refused treatment from police.

The suspect's mother turned him in to police while officers interviewed the victim at his home. Police took the suspect, a 13-year-old Glenelg youth, into custody and charged him with assault with a deadly weapon, robbery and carrying a concealed deadly weapon. The youth was later released into his mother's custody.

While bag snatching is not unusual on Halloween, police said the stabbing raises a safety issue.

"Parents should take a little more concern when they send their children out," said police spokesman Sgt. Gary Gardner.

Three of the incidents took place in Long Reach village in Columbia, police said.